package week5;

import week5.Cricle;

import java.util.Scanner;
    public class week5q1{
        public static void main(String[] args) {
            Scanner sc = new Scanner(System.in);
            System.out.println("请输入圆的半径");
            Cricle cricle = new Cricle();
            cricle.radius=sc.nextDouble();
            System.out.println(cricle.printArea(cricle.radius));
        }
    }
